Carburetor



vr1.. s. DEAsoN ET Al.

cARUREToR Filed June 13, 1923 Feb.3,l925;

,Patented Feb. 3, 1925,

PATEN'E OFFIQE.

LEON S. DEASON, OE' PHENIX CITY, ALABAMA, ANB

.Ifl'ITv'llBU'S, GEORGIA, ASSIGNOBS, BY 'DIR-ECT AND RAYMOND BOXVLES, OEl GO- MESNE ,ASSIGNMENT i OF ONE- Tnrnn fro A'earn Bonitas, ONE-THIRD To wrLLraivr PAGE, AND ONE-THIRD 'ro -WILLIAM A. Bann, Jn., BOTH. or COLUMBUS, GEORGIA,

CARBURETOR.

Application led .Tune 13, l194523. Serial No. 645,143;

To zZZ whom it may concern:

Be it known that we, LEON S. DEAsoN and lRAYMOND A."Bownns, citizens 'of the United States, residing at Phenix City,

in the county of Lee and State of Alabama, and Columbus, in the county of Muscogee and State of Georgia, respectively,

have invented certain new and useful Improvements in'Carburetors, of which the foll@ lowing is a specification.

This invention relates to carburetors and i has special reference to a carburetorparticularly designed and 'adapted for usewith acetylene gas.

In the construction of oarburetors such as yare used in connection with gasoline and other like liquid hydro-carbons it is common to introduce the fuel in an upward direction through a` jet nozzle located axially of a Venturi tube. This practice is found inadmissible when acetylene is used as the fuel since the entire action of such a carburetor depends on suction whereas, whenacetylene constitutes the fuel, the gas is ,supplied underpressure and willcontinue to flow through the nozzle in the intervals between the suction strokes of 'the engine towhich the carburetor is connected ;v the consequence being that there is an accumulation of gas at improper times and an unevenness in the mixture produced so that, at times, explosions take place within the carburetor and, at other times, the engine misses fire.

y It has been found that a carburetor constructed and arranged to produce a downward stream of acetylene gas and provided with proper means for ensuringa thorough mixing 'of the fuel and air will obvia-te all objections to the use of acetylene as a fuel for internal combustion engines and it :is the .principal object of the presenty invention Vtoprovide a novel andimproved carburetor embodying the principles just noted and obviatingthe difficulties found in using a carburetor of the common type with Vacetylene as a fuel.`

With the above and other objects in view, as will be hereinafter apparent, lthe invention consists injgeneral of certain novel delthrough suchl a carburetor.

Figure Sjis a. detail side view of a certain instrumentality used Vin vthe carburetor vto ensure properdistribution of entering air.

Figure 4 is a section on the line 4-4 of Figure 2. o

'1n theembodimentjof the invention herein illustrated there is provided a shell or body having a relatively small' upper vend 10 and a relatively large lower end 11.` The lower part of the end ll'is'internally vthreaded to receive the vcentral yportion 12 of a tubular member which has its upper end of Vreduced sizeas shownat 13 so as to provide ai gas chamber' 1:4 within the end 11 of the'shell.

Between the portions 12 and 13 this tubular member is 'of frusto-conical form, as at 15, toprovide a seat for a valve 1 6 which not only controls communication between the air inlet chamberl 17 within the upper part 10 of the lshell `and the mixing chamber 18 within the'v lower part of the tubular member but also controlsfthe passage of gas from the gas chamber 141l to said mixing chamber through the ports 19 formed in the frustoconical portionVv .15 ofthe ftubular member'.

The upper end of the shell portion` 10j`is internally threaded to receive a plug or cap 204 having a depending lstem 21 carrying at itslower end an air distributer plate 22. Thisplate 22fits closely within the upper end 413 'of the tubularmein'b'er and is provided with peripheral notches 23v vso that air entering the chamber f7 through the lateral ports 24 and flowing downwardly into the mixing chamber 1S is distributed in a series of Streams close along the wall of the air chamber at its lower part, theseV streams flowing in between the streams of gas entering through the ports 19 so that the gas first finds its way to the center of the down flowing stream and then, owing to the frusto-conical shape of the valve, is forced outwardly in a thin :truste-conical sheet together with the air and thus becomes most intimately mixed therewith.

The `plugand its stem have a central open.- ing for the'passage of a valve stem 25 connected to the valve 16 and having at its upper end an extension 26 which passes through the top of a` spring cage or cap screwed onto the upper end of the plug 20. This spring cage is shown at 27 and itY will be seen that there is housed therein a spring 28' which bears at its upper end against a collar 29formed on the'extension 26 so that the valve is constantly urged to closed position. Above thel valve spring cage 27 a second spring SOsurrounds the extension 26 and bears at its upper end against a sliding collar 3l. Pivoted to the upper end of the extension 2G'is a cam linger 32 which, whenV raised, compresses the second springt() to such an extent that the valve 16 is practically looked in seated position, the finger being turned down as shown in Figure 2 when in running position. Acetyleneis supplied to the gas Ychambe: from a suitable generator or storage tank (not shown) through a. supply tube 33 and the infiowing air is controlled by a ported tubular air valve 34E provided with an operating handle 35. Moreover, the lower end of the tubular member is threaded so that an elbow 36 may be screwed thereon to enable the device to be attached to the intake manifold of an internal combustion engine in the usual manner.

In operation, as above noted, the linger is turned down. llVith each suction stroke of the engine `the valve 16 will be opened and air and fuel will rush in to the mixing chamber in the manner described and from thence will pass through the elbow 36 to the intake manifold of the engine. The carburetor thus provides for the downward iiow of both air and fuel and the thorough mixing of the two as they pass down.

There has thus been provided a simple and efficient device of the kind described and for the `purpose specified.

It is obvious that changes may be made inthe form and construction of the device without departing from the material principles involved. It is not therefore desired to confine the invention to the exact form herein shown and described but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

l. A carburetor of the class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at one part therefrom to provide a fuel chamber having port communication with the inner tubular member, the upper end of thel shell and lower end of the tubular member constituting respectively an air chamber and a mixing chamber, and a single valve controlling the communication between theV air and mixing chambers and the port communication between the fuel chainber and the inner tubular member.

2. A carburetor of the class Ydescribed including' an outer shell, an inner tubular member arranged within the outer shell and spaced at one part therefrom to provide a fuel chamber having port communication with the inner tubular member, the upper end of the shell and lower end of the tubular member constituting` respectively an air VYchamber and a mixing chamber, a single :valve *controlling the communication between the airand mixing chambers and the port communication between the fuel chamber and the inner tubular member, and mea-ns at the lower end of the air chamber to distribute the air flowing downwardly therefrom in a plurality of streams. Y

3. EL carburetor ofthe class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at its upper part therefro-m to provide a fuel chamber, said tubular member being provided with spaced ports affording communication from the fuel chamber to the interior of the tubular member, the upper end of the shell and the lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve controlling the communication between the air and mixing chambers and from the fuel chamber through said ports, and an air distributing plate in the lower part of said air chamber arranged to direct streams of air downwardly between the streams of gas iowing through said ports.

4t. fcarburetor of the class described includingl an outer shell, an inner tubular member arranged within the outer shell and spaced at one part therefrom to provide a fuel chamber having port communication with the inner tubular member, the upper end of the shell and lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve cont-rolling the communication between the air `and mixing chambers and the port communication between the fuel chamber and the inner tubular member, and spring means constantly urging saidV valve to closed position.

llO

ivA-'carbi'n'etfor ofthe class described including'an outer shellf'an Vinner tubular member arranged within the outershell and spaced at one part therefrom to provide a fuel chamber having port communication with the inner tubular member, the upper end of the shell and lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve controlling the communication between the air and mixing chambers and the port communication between the fuel chamber and the inner tubular member, means at the lower end of the air chamber to distribute the air fiowing downwardly therefrom in a plurality of streams, and spring means constantly urging said valve to closed position.

6. A carburetor of the class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at its upper part therefrom to provide a fuel chamber, said tubular member being provided with spaced ports affording communication from the fuel chamber to the interior of the tubular member, the upper end of the shell and the lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve controlling the communication between the air and mixing chambers and from the fuel chambers through said ports, an air distributing plat-e in the lower part of said air chamber arranged to direct streams of air downwardly between the streams of gas flowing through said ports, and spring means constantly urging said valve to closed position.

7. A carburetor of the class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at one part therefrom to provide a fuel chamber having port communication with the inner tubular member, the upper end of the shell and lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve. controlling the communication between the air and mixing chambers and the port communication between the fuel chamber and the inner tubular member, spring means constantly urging said valve to closed position, and manually controllable means to increase the tension of said spring means and thereby prevent operation of said valve.

8. A carburetor of the class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at one part therefrom to provide a fuel chamber having port communication with the inner tubular member, the upper end of the shell and lower end of the tubular member 'constituting respectively an air chamber and a mixing chamber, a single vvalve `corina-)lling the communication between the -air andy mixing chambers and the 'port coiinnu-uication between the fuel chamber 'and the inner tubular member, means at the lower end of the air chamber to distribute the air flowing downwardly therefrom in a plurality of streams, and spring means constantly urging said valve to closed position, and manually controllable means to increase the tension of said spring means and thereby prevent operation of said valve.

9. A carburetor of the class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at its upper part therefrom to provide a fuel chamber, said tubular member being provided with spaced ports affording communication from the fuel chamber to the interior of the tubular member, the upper end of the shell and the lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve controlling the communication between the air and mixing chambers and from the fuel chamber through said ports, an air distributing plate in the lower part of said air chamber arranged to direct streams of air downwardly between the streams of gas flowing through said ports, spring means constantly urging said valve to closed position, andmanually controllable means to increase the tension of said spring meansiand thereby prevent operation of said valve.

l0. A carburetor of the class described including an outer shell, an inner tubular member arranged within the outer shell and spaced at its upper part therefrom to provide a fuel chamber, said tubular member being provided with spaced ports affordingr communication from the fuel chamber to the interior of the tubular member, the upper end of the shell and the lower end of the tubular member constituting respectively an air chamber and a mixing chamber, a single valve controlling the communication between the air and mixing chambers and from the fuel chamber through said ports, an air distributing plate in the lower part of said air chamber arranged to direct streams of air downwardly betwleen the streams of gas flowing through said ports, a plug in the upper end of said shell and having a downwardly extending stem supporting the air distributing plate, a valve stem extending upwardly from said valve through said stem and plug and having an extension on its upper end, a spring casing carried by the upper end of said plug and having the valve stem extension passing through its upper end, said extension being provided with a collar located within the spring casing, a compression spring in said casing bearing at its upper end against the collar, a sliding collar on the upper part of said extension, a compression spring on press the second spring upon being turned `the JCop of 'said spring easing and bearing at on its pivot to a predetermined position.

its upper end against the sliding collar, In testimony whereof, We hereunto affix 30 and a` cam finger pivoted to the upper end our signature of the extension and bearing' on said sliding collar, said Cain finger being arranged to LEON S. DEASON.

force the collar downward and thereby Coni- RAYMOND A BGVVLES. 

